The invention discloses a liquid storer for a refrigerator compressor and a manufacturing method. The liquid storer comprises a cylinder, an upper end cover and a lower end cover; the cylinder comprises two cylinder parts and a connecting part; a buffer water outlet part is arranged at the bottom of the connecting part; a filter device is arranged in the connecting part; an elastic guide layer is arranged at the bottom of the filter device; and a support frame is arranged at the bottom of the elastic guide layer. The manufacturing method comprises the following steps: (a) the area division is performed in an assembly workshop; (b) the cylinder parts and the connecting part are respectively molded and manufactured; (c) the cylinder parts and the connecting parts are stacked in a classified manner; (d) the elastic guide layer is installed; (e) the filter device is mounted; (f) the liquid outlet pipe is mounted; (g) the buffer water outlet part is in butt joint with the connecting part; (h) the cylinder is mounted; and (i) the cylinder, the upper end cover and the lower end cover are combined as a finished product. Direct impact effect on the internal of the liquid storer by a liquid refrigerant is reduced; the storage quantity of the liquid refrigerant in the liquid storer is effectively controlled to prevent explosion; and meanwhile, reasonable assembly can be performed to improve the manufacturing efficiency.